Anti-rollover device for crane

Abstract

The utility model relates to the technical field of cranes, in particular to an anti-rollover device for a crane, which comprises a frame, four mounting seats are mounted on the frame, bearing rods are mounted on the mounting seats, hydraulic telescopic rods are mounted at the bottoms of the bearing rods, anchoring devices are arranged on the hydraulic telescopic rods, each anchoring device comprises a mounting ring, and the mounting rings are mounted on the mounting seats. The mounting ring is fixedly mounted on a fixed section of a hydraulic telescopic rod, a telescopic section of the hydraulic telescopic rod is connected with a supporting seat, and four drill rods are rotatably mounted on the inner wall of the supporting seat. Through the arrangement of the anchoring device, the supporting seats can support the frame, the four drill rods are drilled into the ground to anchor the supporting seats, when the frame inclines laterally, the four supporting seats can keep making contact with the ground, the supporting seat on one side applies supporting force to the frame, and the supporting seat on the other side applies pulling force to the frame. And rollover of the frame is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of cranes, in particular to an anti-rollover device for cranes. Background Art

[0002] Crane is a lifting and handling machinery widely used in ports, workshops, power plants, construction sites and other places. The name crane is a unified title for lifting machinery. Usually, the cranes are mainly truck cranes, crawler cranes and tire cranes. The uses of cranes are lifting equipment, emergency, hoisting, machinery and rescue.

[0003] Chinese patent publication number CN 218595945 U discloses "an adjustable anti-rollover structure for a crane", including a support arm body and a movable plate, a movable groove is provided on the surface of the support arm body, a connecting rod is inserted in the movable groove, one end of the connecting rod is fixedly connected to the surface of the movable plate, a groove is provided on the inner wall of the movable groove, a bearing is provided on the inner wall of the groove, and by arranging a rotating shaft and a threaded column, when people need to disassemble the movable plate, they only need to rotate the turntable, which can drive the rotating shaft to rotate, and at the same time drive the threaded column to rotate, and under the interaction of the threaded column and the threaded tube, the clamping rod can be driven to move, and the clamping rod can be separated from the through hole, and then people move the movable plate to separate the movable groove from the connecting rod, and then the movable plate can be disassembled, so that people can disassemble the movable plate more quickly.

[0004] During the conception process, the applicant searched a large number of patent documents on the patent network. For example, Chinese patent publication number CN218595945 U discloses "an adjustable anti-rollover structure for a crane". When used on land, due to the poor bearing capacity of the land, during the lifting process of the crane, the land under the crane may sink locally, causing the crane to tilt, thereby causing the rollover problem. Therefore, an anti-rollover device for a crane is proposed to solve the above-mentioned problem. Utility Model Content

[0005] In view of the deficiencies of the prior art, the utility model provides an anti-rollover device for a crane, which solves the problems raised in the above background technology. To achieve the above purpose, the utility model is implemented through the following technical solutions: an anti-rollover device for a crane, comprising a frame, four mounting seats are installed on the frame, a load-bearing rod is installed on the mounting seat, a hydraulic telescopic rod is installed at the bottom of the load-bearing rod, the hydraulic telescopic rod includes a fixed section and a telescopic section, an anchoring device is provided on the hydraulic telescopic rod, and the anchoring device includes a mounting ring, the mounting ring is fixedly installed on the fixed section of the hydraulic telescopic rod, the telescopic section of the hydraulic telescopic rod is connected to a support seat, and four drill rods are rotatably installed on the inner wall of the support seat.

[0006] Preferably, the outer walls of the four drill rods are each provided with a drill bit thread, and the top ends of the four drill rods are respectively connected to four ball screws.

[0007] Preferably, a thread groove is formed on the surface of the ball screw, and the inner wall of the mounting ring is slidably connected to the thread grooves of four ball screws via balls.

[0008] Preferably, an auxiliary support device is provided on the load-bearing rod, and the auxiliary support device includes two support rods, the support rods are hinged on the load-bearing rod, and the inner walls of the support rods are hinged with connecting rods.

[0009] Preferably, the connecting rod is hinged to the top surface of the support seat, and one end of the connecting rod away from the load-bearing rod is hinged to a support plate.

[0010] Preferably, a counterweight device is provided at the bottom of the mounting seat, and the counterweight device comprises a mounting block, the mounting block is mounted on the supporting seat, and two cushion blocks are mounted on the mounting block.

[0011] Preferably, a sliding rod is hinged between the two cushion blocks, and an end of the sliding rod away from the cushion block is hinged to a hinged part, and the hinged part is installed at the bottom of the mounting seat.

[0012] Preferably, a plurality of counterweight blocks are slidably mounted on the outer wall of the slide rod, and the two cushion blocks are located on the movement track of the counterweight blocks.

[0013] It can be seen from the above technical solutions that the anti-rollover device for a crane provided in the embodiments of this specification has at least the following beneficial effects:

[0014] (1) The utility model provides an anchoring device so that the support seat can support the frame, and four drill rods are drilled into the ground to anchor the support seat, so as to prevent the ground under the support seat on one side of the frame from sinking and causing the frame to tilt, and the support seat on the other side of the frame to tilt aggravatedly. By anchoring the four support seats, when the frame tilts, the four support seats can maintain contact with the ground, the support seats on one side apply supporting force to the frame, and the support seats on the other side apply pulling force to the frame, so as to prevent the frame from tipping over.

[0015] (2) The utility model increases the support area by setting up the auxiliary support device. The two support plates reduce the load-bearing pressure of the support seat and the pressure exerted by the support seat on the ground, making the pressure on the ground more dispersed and reducing the depth of ground sinking, thereby reducing the risk of the frame rolling over. By setting up the counterweight device, the two pads and multiple counterweights exert a certain pressure on the support seat to prevent the support seat from tilting when the frame tilts, further improving the stability of the support seat and reducing the risk of the frame rolling over. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application:

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a structural schematic diagram of the mounting seat in the utility model;

[0019] Figure 3 It is a structural schematic diagram of the anchoring device in the utility model;

[0020] Figure 4 It is a structural schematic diagram of the auxiliary support device in the utility model;

[0021] Figure 5 It is a structural schematic diagram of the counterweight device in the utility model.

[0022] In the figure: 1. frame; 2. mounting seat; 3. load-bearing rod; 4. hydraulic telescopic rod; 5. anchoring device; 51. mounting ring; 52. support seat; 53. ball screw; 54. drill rod; 6. auxiliary support device; 61. support rod; 62. connecting rod; 63. support plate; 7. counterweight device; 71. mounting block; 72. cushion block; 73. sliding rod; 74. counterweight block; 75. hinge. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Example 1

[0025] See also Figure 1-Figure 3As shown, an anti-rollover device for a crane comprises a frame 1, four mounting seats 2 are mounted on the frame 1, a load-bearing rod 3 is mounted on the mounting seat 2, a hydraulic telescopic rod 4 is mounted at the bottom of the load-bearing rod 3, the hydraulic telescopic rod 4 comprises a fixed section and a telescopic section, an anchoring device 5 is arranged on the hydraulic telescopic rod 4, the anchoring device 5 comprises a mounting ring 51, the mounting ring 51 is fixedly mounted on the fixed section of the hydraulic telescopic rod 4, the telescopic section of the hydraulic telescopic rod 4 is connected with a supporting seat 52, the four hydraulic telescopic rods 4 are started, the four hydraulic telescopic rods 4 respectively drive the four supporting seats 52 to move downward, when the supporting seats 52 contact the ground and lift the frame 1 a certain distance, the four hydraulic telescopic rods 4 are closed, and the frame 1 is supported by the cooperation of the mounting seat 2, the load-bearing rod 3, the hydraulic telescopic rod 4 and the supporting seat 52, and four drill rods 54 are rotatably mounted on the inner wall of the supporting seat 52 The outer walls of the four drill rods 54 are provided with drill bit threads, and the tops of the four drill rods 54 are respectively connected to four ball screws 53. The surfaces of the ball screws 53 are provided with threaded grooves, and the inner wall of the mounting ring 51 is slidably connected with the threaded grooves of the four ball screws 53 through balls. When the support seat 52 moves downward, the support seat 52 drives the four drill rods 54 to move downward, and the four drill rods 54 drive the four ball screws 53 to move downward respectively. In the process of the downward movement of the ball screw 53, the ball screw 53 rotates while moving downward through the cooperation between the balls in the mounting ring 51 and the threaded grooves on the surfaces of the ball screws 53. When the ball screw 53 rotates, it drives the drill rod 54 to rotate, so that when the drill rod 54 contacts the ground, it drills into the soil through its own rotation and downward pressure, and the four drill rods 54 are anchored to the support seat 52 by drilling into the ground.

[0026] In this embodiment, the anchoring device 5 is provided so that the support seat 52 can support the frame 1, and the four drill rods 54 are drilled into the ground to anchor the support seat 52, so as to prevent the ground under the support seat 52 on one side of the frame 1 from sinking and causing the frame 1 to tilt, and the support seat 52 on the other side of the frame 1 to tilt aggravatedly. By anchoring the four support seats 52, when the frame 1 tilts, the four support seats 52 can maintain contact with the ground, the support seats 52 on one side apply a supporting force to the frame 1, and the support seats 52 on the other side apply a pulling force to the frame 1, so as to prevent the frame 1 from tipping over.

[0027] Example 2

[0028] See also Figure 3-Figure 5As shown, an auxiliary support device 6 is provided on the load-bearing rod 3, and the auxiliary support device 6 includes two support rods 61, the support rod 61 is hinged on the load-bearing rod 3, the inner wall of the support rod 61 is hinged with a connecting rod 62, the connecting rod 62 is hinged to the top surface of the support seat 52, and the end of the connecting rod 62 away from the load-bearing rod 3 is hinged with a support plate 63. When the support seat 52 moves downward, the support seat 52 drives the two connecting rods 62 to move downward, and the two connecting rods 62 drive the two support rods 61 to move in the direction away from the support seat 52, and the two support rods 61 drive the two support plates 63 to move in the direction away from the support seat 52. When the support seat 52 moves into place, the two support plates 63 come into contact with the ground at the same time, thereby supporting the frame 1; a counterweight device 7 is provided at the bottom of the mounting seat 2, and the counterweight device 7 includes The mounting block 71 is mounted on the support seat 52, and two pads 72 are mounted on the mounting block 71. A slide bar 73 is hinged between the two pads 72, and one end of the slide bar 73 away from the pad 72 is hinged with a hinge 75, which is mounted on the bottom of the mounting seat 2. A plurality of counterweights 74 are slidably mounted on the outer wall of the slide bar 73, and the two pads 72 are located on the movement trajectory of the counterweights 74. When the support seat 52 moves downward, the support seat 52 drives the mounting block 71 to move downward, and the mounting block 71 drives the two pads 72 to move downward. The two pads 72 drive one end of the slide bar 73 away from the hinge 75 to move downward, causing the slide bar 73 to tilt. When the support seat 52 moves into place, the plurality of counterweights 74 slide along the inclined slide bar 73 onto the two pads 72.

[0029] In this embodiment, the auxiliary support device 6 is provided to increase the support area, and the two support plates 63 reduce the load-bearing pressure of the support seat 52, and at the same time reduce the pressure exerted by the support seat 52 on the ground, so that the pressure on the ground is more dispersed, and the depth of ground sinking is reduced, thereby reducing the risk of the frame 1 rolling over; through the provision of the counterweight device 7, the two pads 72 and the plurality of counterweight blocks 74 exert a certain pressure on the support seat 52, so as to prevent the support seat 52 from tilting when the frame 1 tilts, thereby further improving the stability of the support seat 52, thereby reducing the risk of the frame 1 rolling over.

[0030] When the anti-rollover device for a crane of the utility model is in use, the four hydraulic telescopic rods 4 are started, and the four hydraulic telescopic rods 4 respectively drive the four support seats 52 to move downward. When the support seats 52 touch the ground and lift the vehicle frame 1 to a certain distance, the four hydraulic telescopic rods 4 are closed, and the support of the vehicle frame 1 is completed through the cooperation of the mounting seat 2, the load-bearing rod 3, the hydraulic telescopic rod 4, and the support seat 52. When the support seat 52 moves downward, the support seat 52 drives the four drill rods 54 to move downward, and the four drill rods 54 respectively drive the four ball screws 53 to move downward. In the process of the ball screw 53 moving downward, the ball in the mounting ring 51 cooperates with the threaded groove on the surface of the ball screw 53, so that the ball screw 53 rotates while moving downward, and the ball screw 53 drives the drill rod 54 to rotate when it rotates, so that when the drill rod 54 When it contacts the ground, it drills into the soil through its own rotation and downward pressure. When the support seat 52 contacts the ground, the four drill rods 54 fix the support seat 52 and the ground through the pulling force of drilling downward. Through the setting of the anchoring device 5, the support seat 52 can support the frame 1, and the four drill rods 54 anchor the support seat 52 by drilling into the ground, so as to prevent the ground under the support seat 52 on one side of the frame 1 from sinking and the frame 1 from tilting. The support seat 52 on the other side of the frame 1 is tilted, causing the tilting situation to be aggravated. By anchoring the four support seats 52, when the frame 1 tilts, the four support seats 52 can maintain contact with the ground, the support seats 52 on one side apply supporting force to the frame 1, and the support seats 52 on the other side apply pulling force to the frame 1 to prevent the frame 1 from tipping over.

[0031] When the support seat 52 moves downward, the support seat 52 drives the two connecting rods 62 to move downward, and the two connecting rods 62 drive the two support rods 61 to move away from the support seat 52, and the two support rods 61 drive the two support plates 63 to move away from the support seat 52. When the support seat 52 moves into place, the two support plates 63 come into contact with the ground at the same time, thereby supporting the frame 1. By setting the auxiliary support device 6, the supporting area is increased, and the two support plates 63 reduce the bearing pressure of the support seat 52, and at the same time reduce the pressure exerted by the support seat 52 on the ground, so that the pressure on the ground is more dispersed, and the depth of ground sinking is reduced, thereby reducing the risk of the frame 1 rolling over.

[0032] When the support seat 52 moves downward, the support seat 52 drives the mounting block 71 to move downward, and the mounting block 71 drives the two cushion blocks 72 to move downward. The two cushion blocks 72 drive the end of the slide bar 73 away from the hinge 75 to move downward, causing the slide bar 73 to tilt. When the support seat 52 moves into place, a plurality of counterweight blocks 74 slide along the inclined slide bar 73 onto the two cushion blocks 72. Through the setting of the counterweight device 7, the two cushion blocks 72 and the plurality of counterweight blocks 74 apply a certain pressure to the support seat 52, thereby preventing the support seat 52 from tilting when the frame 1 tilts, further improving the stability of the support seat 52, thereby reducing the risk of the frame 1 tipping over.

[0033] The above implementation methods are only used to illustrate the embodiments of the present utility model, and are not limitations of the embodiments of the present utility model. Ordinary technicians in the relevant technical field can make various changes and modifications without departing from the spirit and scope of the embodiments of the present utility model. Therefore, all equivalent technical solutions also belong to the scope of the embodiments of the present utility model. The patent protection scope of the embodiments of the present utility model should be limited by the claims.

Claims

1. A rollover prevention device for a crane, comprising a frame (1), characterized in that: Four mounting seats (2) are mounted on the vehicle frame (1), a load-bearing rod (3) is mounted on the mounting seat (2), a hydraulic telescopic rod (4) is mounted at the bottom of the load-bearing rod (3), the hydraulic telescopic rod (4) comprises a fixed section and a telescopic section, an anchor device (5) is arranged on the hydraulic telescopic rod (4), the anchor device (5) comprises a mounting ring (51), the mounting ring (51) is fixedly mounted on the fixed section of the hydraulic telescopic rod (4), the telescopic section of the hydraulic telescopic rod (4) is connected to a support seat (52), and four drill rods (54) are rotatably mounted on the inner wall of the support seat (52).

2. The anti-rollover device for a crane according to claim 1, characterized in that: The outer walls of the four drill rods (54) are each provided with a drill bit thread, and the top ends of the four drill rods (54) are respectively connected to four ball screws (53).

3. The anti-rollover device for a crane according to claim 2, characterized in that: The surface of the ball screw (53) is provided with a thread groove, and the inner wall of the mounting ring (51) is slidably connected to the thread grooves of the four ball screws (53) via balls.

4. The anti-rollover device for a crane according to claim 3, characterized in that: An auxiliary support device (6) is provided on the load-bearing rod (3), and the auxiliary support device (6) comprises two support rods (61). The support rods (61) are hinged on the load-bearing rod (3), and the inner walls of the support rods (61) are hinged with connecting rods (62).

5. The anti-rollover device for a crane according to claim 4, characterized in that: The connecting rod (62) is hinged to the top surface of the support seat (52), and one end of the connecting rod (62) away from the load-bearing rod (3) is hinged to a support plate (63).

6. The anti-rollover device for a crane according to claim 5, characterized in that: A counterweight device (7) is provided at the bottom of the mounting seat (2), and the counterweight device (7) comprises a mounting block (71). The mounting block (71) is mounted on the support seat (52), and two cushion blocks (72) are mounted on the mounting block (71).

7. The anti-rollover device for a crane according to claim 6, characterized in that: A slide bar (73) is hinged between the two cushion blocks (72), and an end of the slide bar (73) away from the cushion block (72) is hinged with a hinge member (75), and the hinge member (75) is installed at the bottom of the mounting seat (2).

8. The anti-rollover device for a crane according to claim 7, characterized in that: A plurality of counterweight blocks (74) are slidably mounted on the outer wall of the slide bar (73), and the two cushion blocks (72) are located on the movement track of the counterweight blocks (74).

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